Saw-filing tool



F. KNIZEK.

SAW FILING TOOL.

APPLICATION FILED MAR. aI. I9I9.

Patented Feb. 3, 1920.

/0 l I By I ATTO R N EY Vashiiigton,

UNITED sTATEs PATENT oEEioE.

n FRANK KNIZEX, 0F DOTY, WASHINGTON.

i sAw-EiLiNG Toor..

To all whom t may concern. j

Be it known thatrl, FRANK KNIZEK, a citizen of the United States, residing at Doty, in the county of Lewis and State of have inventedl certain newfand useful Improvements in Saw-Filing Tools, of which the following is a specification.

This invention relates to sawfiling tools and, more especially, to improvements in saw gages and jointers.` The object of my dressed than hitherto.' j

With these ends in view, the invention consists in the novel construction, arrange- Y ment and combination of parts, as will be hereinafter described and claimed.

In the accompanyingdrawings, Figure 1 is a top plan view of a saw tool embodying iny invention g' Fig. 2 isa rear elevation; Fig. 3 isa front elevation shown partly in section; Fig. 4 is an underside plan view; Fig. 5 is a central transverse sectional view through the aforesaid views. n

The device is formed with a body or frame having a web comprised of a central member 5 and end members 51 which are formed integral with two flanges 6 which extend forwardly from the upper ends of said members. Between said flanges and continuedV into the central member 5v is a recess 7. At the front of the frame and intermediate its height itis provided with longitu'dinal ribs 8. Ribs 9 are provided at theback of the frame and extend rearwardly from the latter to terminate in a vertical plane in whichis located the rear edges of flanges 6 and serving therewith to retain the tool inY an upright position when juxtaposed with the blade of a saw.

The portions of the frame members 5 and 51 below the ribs 8 and 9 are offset, as at 52 (Fig. 5) .forwardly with respect to the parts of the members above saidv ribs, and

terminate in forwardly projecting bracket or stirrup elements 53 and 51. Secured centrally of its length by screws 10 upon the stirrup 53- is a longitudinal plate 11 which extends over the other stirrup 54 seated adjacent to its ends and at its midwidth upon screws 101 extending through the respective stirrups 51.

By regulating the screws 101 the plate 11 is curved vertically to an arc of a circle corresponding' to that in which the points of the Specification of Letters Patent.

Application filed March 31, 1919. Serial No. 286,269.

devices ofA vand is.

Patented Feb. 3, 1920.

cutter teeth of a saw are located and is priymarily designed to be used as a gage to` test suoli are, and' also servesY asa backing, or forni, against whichY is bent a file (shown ,by broken 'lines A in Fig. 2) through the instrumentality of' a clamping screw 12 extending through a threaded hole in a lu 13 provided at the rear of the frame, as est shown in Figs. 2 and 5.

Theplate 11 is disposed to have its front edge 111 in a vertical plane with the front edges of the ribs 8 and the width of the plate is such that it will project beyond the plane of the rear edges of the ribs 9 at the back of the frame. v

Positioned below each of the flanges 6 are flexible plates 14 extending the entire length of the respective flanges and are secured thereto in proximity to their inner ends by means ofscrews 15.

16 represents a gage block secured to the frame member 5 in vertically adjusted positions by means of headed screws 17 passing` through slots 171 provided in the member 5 and engaging in threaded holes provided in lugs 161 depending from the block 16. Y v y 18 represent. screws engaging in threaded holes provided in frame flanges 6 and thence through apertures, such as 1111, provided in lthe plates 14. The lower ends of .the screws 18 engage against `the upper surface 162 of said block and whereby the elevation of the block may be regulated. y

In proximity `to the outer ends of flanges 6V are provided threaded holes lfor screws 181 whose lower ends' impinge the subjacent plates 14' for thepurpo'se of pressing down on the free ends of the plates to curve the same to the arc of the cutting teeth of a saw.

The aforesaid block is provided with a" plying the device. thereto so that the re-y ferred to teeth points will contact with the concave face of the blade 11. If but several of the teeth are discovered to be too long they would Vdesirably be individually cut down to proper length by means of a file held in the hands of the operator. Should there be a number of cutting teeth seen by a comparison with the gage bladel 11 to be short, thenthe saw should be jointed or dressed down to cause the teeth points to be in a common arc.

This operation is performed b employing a file A secured in place and deflected by the clamping Screw 12 against the blade 1l whereupon the device is drawn .lengthwise over the saw teeth while the ribs 9 are held against a side of the saw blader .The device is thenvplaced upon the saw so that one of its raker teeth,'as C (Fig. 3)

' will project through the slot 19 of the block 16, while the adjacent cutter teeth B support the device by having the plates 14 rest upon these teeth. During the operation, the device is held upright by the operator through'the medium of the blade-edge 111 andthe ribs 8 contacting withv the saw blade. Should'the points of a raker tooth protrude -much above the `block surface 162,

they are first swaged down to extend but a short distance thereabove and are then filed in the usual manner to dress the points down flush with the block surface and bring the points to acute angles and also afford the vrequisite hook to the raker-tooth points.

Finally the cutting teeth are individually filed in the ordinary manner ofsharpening-,

After these points are swaged and filed,

the endspof the same may be tested as to v their being rectangular in a horizontal direction and with respect to the saw blade by bringing an end 191'of the slot 19 against a tooth. Y

Among the advantages provided by the present invention, is the means .for regulating the plate 1l so that'the latter may be curved without being twisted or war ed laterally. This function is accomplishe by offsetting the stirrup which supports the vplate and locating the adjusting screws Y therefor inthe longitudinal axis of'the plate Another advantagev is in the-manner or means of connecting thexadjacent ends of the plates 14 directly tothe frame by screws 15 to afford a fixed and rigid support for these Y plates 'instead of. `clampingthe same beas hitherto, Vwhereby the use of filling or shim pieces -betweenthe block and platesV 14; is obviated.-

The block 16 is in the present invention regulated by loosening the connection therewith of the screws 17 and thereupon regulating the position of the block by means of screws 18, after which the block is secured in its adjusted position to the frame by the screws 17 Y What I claim is- Y 1. In a tool of the class described, a framey having upright web members and flanges extending horizontally from the upper ends of said web members, flexible plates positioned below said flanges and fixedly secured at their inner ends to said flanges, screws extending through threaded holes in theV frame flanges for regulating the curvature of said plates, a gage block, adjustment screws extending through threaded holes 1n said Vframe flanges vfor regulating the elevation of said gage block relatively to said [tween the frame flanges 6 and the block 16, l

plates, screws extending throughslots proframe ends, said web members having their`A lower portions curved toward the front and terminating in stirrup elements directed toward the front of the frame, of a Vplate seated upon and rigidly 'secured to the central oneof said stirrups, adjustment screws extending upwardly throughy threaded holes provided in the end stirrups and disposed in the longitudinal axis of said Vplate for supporting the plate adjacent to its ends and regulating its curvature, and a'claniping screw coperating with said plate for bending a file against the latter.

Signed at VDoty, Viashingtom this 17th day of March, 1919. j Y FRANKV KN/IZEK.

Witnesses T. B. STIDHAM,

Orr'ro CHARLsoN. 

